Wilhelm helmttth schweitzer



WILHELM HELMUTH SCHWEITZER, or HEIDELBERG, GERMANY, ASS-IGNOR. To

SOCIETY TECHNOCHEMIA AKTIENGESELLSCHAFT, OF GLARUS,

LAND.

SWITZER- MIXED TEXTILE GOODS AND PROCESS OF MAKING- SAMIL.

No Drawing.

T 0 all whom'it may cmwemt:

Be it known that I, \VILHELM HELMUTH SoHwnI'rzER, a citizen of the German Republic, and resident of Heidelberg, Germany, have invented a new and useful Mixed Textile Goods and Process-of Making Same, of which the following is a full, clear, and exact specification.

By mixing wool, hairs or other anlmal fibres together with the known artificial cel-' in a wet state, a greater fastness than textile,

goods made only of artificial cellulose fibres.

The new mixed textile goods are substi tutes of cellulosic artificial silks, which are cheaper than the new animal textile products described in my U. S. Letters Patent No.- 1389274 and No. 1389275 and show against water a sufficient fastness, when as shown in the following'example, the proportion of the new animal textile product is 1n,

the new mixed textile goods at' least one half by weight of the artificial cellulose fibres.

' Example.

50 kilos tops (wool slivers) previously treated successively with 100 per cent of chloride of lime-andsoda lye (caustic soda) and subsequently soaped, as described in the above cited specification, are mixed on the gill-box with 100 kilos of combed artificial cellulose fibre (artificial silk) of any degree of fineness and spun in the usual way, 1

' ample.

Specification of Letters Patent. Patented Apr. 25, 1922.

Application filed April 28, 1921. Serial No. 465,290. 7

The unitary lustrous appearance is not changed after dyeing.

The proportion of the new animal textile product in the new mixed textile goods can obviously be more than of the weight of the mixture. But there is obtained generally a practically sufficient fastness of the mixed textile goods against water, when the proportion is that given in the above ex- What I claim is: 1. As a new article of manufacture the hereln described mixed lustrous textile goods having the appearance of a goods made of only one kind of fibre, and being formed by a mixture of ,one ofthe known artificial cellulose fibres and of one of the new animal textile products resulting from the successive treatment of an animal fibre with an oxidizing agent and an alkaline substance, the proportion of the new animal textile product being at least J,- of the weight of the new mixed textile goods which shows thus a suflicient fastness against water.

2. As a new article of manufacture the herein described mixed lustrous textile goods having the appearance of a goods made of only one kind of fibre, and being formed by a mixture of one of the known artificial cellulose'fibres, and the new animal textile product resulting from the successive treatment of wool with an oxidizing agent and an alkaline substance, the proportion of the said new animal textile product being at least of the weight of the new mixed textile goods, which'shows thus a suflicient fastness against water.

In witness whereof I have hereunto signed 

